A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing Ball mills are used extensively in the mechanical alloying process in which . In situ leaching Gold chlorination Gold cyanidation Bayer process.

A stamp mill is a type of mill machine that crushes material by pounding rather than grinding, Some ore processing applications used large quantities of water so some They were common in gold, silver and copper mining regions of the US in Ball mill - a horizontal cylinder containing metal balls to crush the material

One of the worlds largest mechanically driven horizontal mills for a Russian gold mine. two gigantic mills process up to 30,000 tons of ore every day to extract gold. The ball mill measures 8.2 m x 14 m, and in terms of its power, which is